Server :: Cannot Login To System Red Hat Using Root Password
Apr 17, 2011
I just receive news from my superior. He said he cannot login to system Red Hat using root password.So when i check, someone change root password. I restart server and login as single user. When i put new password, it not change.How to fix it? Is that mean someone just hack my server? That server is in DMZ zone.
I am an absolute Linux Beginner who is being required to do a bit of admin work because the boss just fired the old linux admin. Unfortunately, one of our employees cannot remember her password to her email account and as such I need to reset it on our linux server.What I want to check is that this email account is actually a linux user account and I simply will reset the password for it using the passwd command from the root login. Is that correct?
I edited fstab to automatically mount my windows data partition on boot, but I screwed it up by not specifying the file system type, however that is not the problem, I was able to fix that easily. The problem was that when it failed to mount the partition, Debian automatically entered root and I guess that is to be expected in order for me to fix it, but I never configured a root password and it just gave me full root access without asking any password, not even my user password. I though that was strange so I set the root password and sure thing it asked me for the root password this time without automatically logging into root....
I then tried to lock the root account to see if it will ask me for a password or not, it did but of course I wasn't able to login as root because it was locked now and I was left with no way to access the system. I had to fix fstab from a live cd so that I can login normally as the user....
I didn't know what to search for or if that is the expected behavior if you don't set root password during installation, but it just seemed a bit strange to automatically enter root when you specifically disable root login during installation...
Found a major security hole in one of my more crucial linux servers today. (Only locally) I can use the user name "root" and any string for the password. So I can literally type "poop" as the password and the server lets me in. I know how to set root password settings for SSH and sudo, but where are settings located for local access that would allow something like this?
Can't seem to do it, wondering if anyone knows how? Normally there's something in sshd_config that can be switched to true or yes to allow root login but I can't see it in fedora 12.I can login via root at a terminal no problem, just not via ssh, I get access denied every time. Also, I need to login using password authentication.I've done: 227169 but that's just for GUI which I don't really need since I rarely ever log into the GUI.I have also searched through here and mostly only found info such as above, how to enable root login for GUI, or billions of posts about how logingin as root is bad but I cannotswer to my question.DISCLAIMER: Please do not reply to this thread if all you can contribute is the question of why I need root or to put some message telling me I can do everything using su, etc, etc. Please only contribute if you can answer my question. A: My machine and a valid quesiton. B: Spirit of Linux is open, not restrictive
I am new to ubuntu and I've installed it but I didn't use it too much. Now I was trying to login into ubuntu but I forgot the root password. Can I login into ubuntu or change the root password. I didn't make any other user than the installation were asking me. If I try to reinstall the ubuntu, the setup will help me to choose the same partition (to overwrite on the previous ubuntu)?
I'm trying to figure out why my industrial appliance (x86, running kernel 22.214.171.124 and OpenSSH_4.3p2 / OpenSSL 0.9.7m) accepts ssh connections without asking for a password (even for root)!When I log on to the local console as root I have to enter a password but strangely this prompt won't appear using a ssh connection (although I'm not using any client certificates).Of course that not acceptable but I just can't find the related configuration entry to disable this "password-less" authentification.Is this related to the sshd or has it something to do with the PAM module?
- Update -> While looking at /var/log/secure, I've found the following lines: Jul 18 16:55:07 localhost sshd: Accepted none for root from XXX port 6393 ssh2
Suddenly Debian started rejecting my user pw and I have to login as root. Perhaps this is a coincidence, but this started when I re-booted after adding Russian keyboard layout in etc/default/keyboard. The Russian keyboard added successfully.
Being logged in as root, renewed the pw of my user account (actually assigned the same as wes previously), got confirmation the the pw has been changed. Reloaded. Yet it keeps complaining that the pw is wrong.
Having installed Debian 7 on an old machine from a Liinux Format Magazine DVD I was unable to log in as a specific user. I can login as root and use useradd etc but when I logout of root I still cannot login as a user and nor will the machine accept my root password. I have to shutdown and reboot to get back into root. I'm using O'Reilly's Linux Pocket Guide from 2004 for the commands. Could it be that things have changed?
I want to give my users option of logging to the system. They should have posibillity for choosing option betweend logging to the system with their default password or one-time password OTPW. I installed OTPW in my Debian. Here is my /etc/pam.d/sshd file:
I have a Suse 11.0 Server that has been running for a long time and I have not had to touch it, well I need to get into it today and I forgot the password. So I booted it up with the install disc and got into the rescue mode but I am not sure how or which system to mount to change the root password I tried sda and sda1 but it errored out with unknown system type
Is it possible to somehow setup an ssh server that doesn't require a username,password or cert to login?I wish to provide shell access to a console program, which will prompt for a username and password.Encryption is essential though, and users must not be able to snoop in on each other
Today I have installed Linux SUSE 11.2 . At installation, I was asked for user-name and password. I edit this correctly.
At the end of the installation, the system reboots until the mask 'user name' and 'password' will be displayed. When I edit my user-name and the password the system said, that the login is not correct.
First, I think, I have forgetten my password an do a new installation of Linus SUSE 11.2 . Whatever, the same problem ist still there.
I have just bought a PC with SUSE 10.1-0. The first time I started the PC an installation menu appeared. I didn't define a user name, thinking that it should log in automatically (as in Windows occurs), but now I can't go farther from the Welcome screen, due to the system is asking me de user and password, but I didn't introduce nothing! Leaving username and password in blank didn't solve the matter.
I can see the admin screen (pressing F10) but I am not able to find any user to log (logically) and I can't include new users from there.
I have also tried to install Windows XP modifying the BIOS but the system returns a message (once in the WinXP installation program) about an error called 4096, about the file i386halaacpi.dll, which is unable to find (something about the HAL), so I am afraid that my (new) RAM memory is damaged.
What could I do? The system is for an old person, so I would like to install finally WinXP and delete Suse.
i,m using Fedora11 since some time.... to day i hav updated my system but after updation, im unable to login my system through Gnome, but i can login by KDE as usual. now there is another problem i can,t login system throgh root account although i can access root account through terminal
For a month or so now, I have been enabling ssh and opening port 22. I cron'ed the start and stop commands to leave them open only a few hours a day. After a bit, I checked my logs to find that some IP or another was attempting to brute force my root account.
I took little real threat by the offense.
(1) my system does not allow root to login and
(2) it would cut them off sooner than later when my system issued the stop command.
Today I log in to find that all of my log files, as viewed from the gnome log file viewer, were empty of entries from about noon yesterday and prior.
Though I haven't noticed anything at all out of the ordinary with my system, I would like to get more opinions on the matter. Would there be any conceivable way that this was an automatic system routine, a clean up action of something? Additionally, if I was indeed the victim of a hack, what can I do to further protect my system (keeping in mind that I do want to access my system via ssh from time to time)?
how to implement a password login system that both sends passwords over the internet in an encrypted form (so my users don't get that annoying message saying "this web site is about to send your password in an unsafe form..." and stores its user data in a MySQL database? This seems to need a combination of mod_auth_digest and mod_auth_mysql.
I added a whole slew of apps to my favorites and lost the 'Shutdown' option...every time I try to shutdown in the Terminal I am told I must be logged in as Root to do so...I can't figure out how to do this I'm a newbie to Linux but a CNE 5 -haven't used it 10 years- an MCP and A+ certified I've searched local help and SuSe's site and I can't find anythingI've only spent a couple of hrs on this and have had SuSe 11.2 installed since last Sunday
How to enable Root login...i cant copy or move something on the HDD...I have administrator rights and password for root but i cant change permissions for the HDD without login on root and root login are not allowed .
for resetting the root user's password. Actually, I am using www.linuxzoo.net for online practice of Linux and have MySQL installed on it. But I forgot the password I set. There was no password by default set for the root user. So, I just trying setting a password last week. Now I am not getting what I did.